A soft polyolefin resin composition and an article molded therefrom are provided. The polyolefin resin includes: (A) 50 to 95% by weight of an ethylene-propylene block copolymer obtained by polymerization of a propylene homopolymer or an ethylene-propylene random copolymer with an ethylene-propylene rubber copolymer in stages in reactors; (B) 4.8 to 40% by weight of an ethylene-α-olefin rubber copolymer; and (C) 0.2 to 10% by weight of a copolymer of ethylene and a polar monomer, based on the total weight of components (A) to (C). The glass transition temperature of the rubber component in the ethylene-propylene block copolymer appears at −60 to −40° C. when measured by a dynamic mechanical analyzer, the melt index of the polyolefin resin composition measured at 230° C. under a load of 2.16 kg is 0.5 to 20 g/10 minutes, and the glass transition temperature of the rubber component in the polyolefin resin composition appears at −60 to −40° C. when measured by a dynamic mechanical analyzer.

A polymer composition is provided with improved stress whitening resistance, having at least one thermoplastic polymer material and a dielectric liquid. A process for preparing the polymer composition, a cable having at least one electrically insulating layer obtained from the polymer composition, and a process for preparing the cable are also provided.

A power cable 1 according to the present invention contains a propylene-based resin in a specific range as an insulating layer 13, and has a specific relationship between the cooling rate X at the time of manufacturing the interface portion in the insulating layer 13 with an inner semiconductive layer 12 and the cooling rate Y at the time of manufacturing the central portion of the insulating layer 13. Thus, not only the surface of the insulating layer 13 but also the inside of the insulating layer 13, the interface portion in the insulating layer 13 with the inner semiconductive layer 12, and the inside thereof are reliably cooled and cured. Therefore, the metal conductor 11 is not displaced from the center of the power cable 1 due to its own weight, and uneven thickness is less likely to occur.

Provided is an insulated electrical cable that includes a base resin containing a polypropylene resin, and a metallic hydroxide serving as a flame retardant, and has high wear resistance and favorable low-temperature resistance. An insulated electrical cable 10 includes a wire conductor 12, and an insulating coating 14 that coats an outer circumference of the wire conductor 12, and the insulating coating 14 includes a polymer component containing a polypropylene resin, and a flame retardant containing a metallic hydroxide. The polypropylene resin has a heat of fusion of at least 35 J/g, and in a molecular weight distribution of the polymer component, a number average molecular weight calculated at a peak with the largest area is at least 5.00×10.sup.4.

A resin pellet includes a pellet-shaped ethylene-vinyl acetate copolymer; a liquid coating agent; and a solid coating agent adhered to at least a portion of surfaces of the ethylene-vinyl acetate copolymer and of the liquid coating agent, in which the liquid coating agent is a compound including a hydroxyl group, and the solid coating agent is an organic compound.

The present invention relates to an electric cable comprising at least one semiconductive layer obtained from a polymer composition comprising at least one homophasic propylene polymer and at least one homophasic copolymer of a C.sub.3-C.sub.6 olefin and ethylene.

The invention relates to a cable comprising layer(s), which layer(s), is/are obtained from a polymer composition, wherein the polymer composition comprises a polyethylene and a crosslinking agent, wherein the polymer composition contains a total amount of vinyl groups which is B vinyl groups per 1000 carbon atoms, and B.sub.1≤B, wherein B.sub.1 is 0.88, when measured prior to crosslinking according to method ASTM D6248-98; and wherein the crosslinking agent is present in an amount which is Z wt %, prior to crosslinking, based on the total amount (100 wt %) of the polymer composition, and Z≤Z.sub.2, wherein Z.sub.2 is 0.60, the cable, e.g. being a power cable, and processes for producing the cable; the cable useful in different end applications, such as wire and cable (W&C) applications.

A multimodal polyethylene composition having a lower molecular weight (LMW) ethylene homo or copolymer component (A) and a higher molecular weight ethylene copolymer component (B); wherein the lower molecular weight component comprises: (ai) a first fraction which comprises an ethylene homo or copolymer of ethylene and one or more C3-10 alpha olefins; and (aii) a N second fraction which comprises a different ethylene homo or copolymer of ethylene and one or more C3-10 alpha olefins; wherein the multimodal polymer composition has a density of 930 kg/m.sup.3 or more (ISO1183), such as 938 to 955 kg/m.sup.3, an MFR2 (ISO1133 at 190° C. and 2.16 kg load) in the range of 0.05 to 10 g/10 min, and a flexural modulus of up to 800 MPa, such as 300 to 800 MPa (ISO 178:2010).

An ethylene/tetrafluoroethylene copolymer satisfying the following formula (1), wherein peak intensities, determined by Fourier transform infrared spectroscopy, of vibrations derived from a —CF.sub.2H group, a —CF.sub.2CH.sub.2COF group, a —COF group, a —COOH group, a dimer of a —CF.sub.2COOH group and a monomer of a CF.sub.2CH.sub.2COOH group, a —COOCH.sub.3 group, a —CONH.sub.2 group, and a —CH.sub.2OH group satisfy the following formula (2):
75≤tan δ(60)/tan δ(5)×100≤225  (1)
PI.sub.A/(PI.sub.B+PI.sub.C+PI.sub.D+PI.sub.E+PI.sub.F+PI.sub.G+PI.sub.H)≥0.60  (2) wherein tan δ(60), tan δ(5), PI.sub.A, PI.sub.B, PI.sub.C, PI.sub.D, PI.sub.E, PI.sub.F, PI.sub.G and PI.sub.H are as defined in the specification. Also disclosed is a molded article obtained by molding the ethylene/tetrafluoroethylene copolymer and an electric wire including a core and a coat formed from the ethylene/tetrafluoroethylene copolymer.

A medium voltage electric cable having a conductor, an inner semi-conductive layer, an insulating layer, an outer semi-conductive layer, a wire metal screen, a filler layer made from an extruded elastomeric low smoke zero halogen (LSOH) composition containing a polyethylene homopolymer and/or copolymer having a density lower than 0.93 g/cm.sup.3 and a metal hydroxide, and an outer sheath made from a low smoke zero halogen (LSOH) composition containing a polymer mixture of an EVA polymer and polyethylene homopolymer and/or copolymer having a density lower than 0.93 g/cm.sup.3, the polymer mixture being charged with a metal hydroxide and a phyllosilicate clay.